dolphin/Source/Core/VideoCommon/TextureConverterShaderGen.cpp
Emmanuel Gil Peyrot d9c2de90c0 Reimplement EFB copy for intensity formats
This is the direct continuation of #5887, and removes the last usage of
the colmat matrix in EFB copy conversion shaders.
2017-12-19 12:04:56 +01:00

243 lines
7.7 KiB
C++

// Copyright 2017 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <array>
#include <cstring>
#include "Common/Assert.h"
#include "Common/CommonTypes.h"
#include "VideoCommon/BPMemory.h"
#include "VideoCommon/TextureConverterShaderGen.h"
#include "VideoCommon/VideoCommon.h"
#include "VideoCommon/VideoConfig.h"
namespace TextureConversionShaderGen
{
TCShaderUid GetShaderUid(EFBCopyFormat dst_format, bool is_depth_copy, bool is_intensity,
bool scale_by_half)
{
TCShaderUid out;
UidData* uid_data = out.GetUidData<UidData>();
memset(uid_data, 0, sizeof(*uid_data));
uid_data->dst_format = dst_format;
uid_data->efb_has_alpha = bpmem.zcontrol.pixel_format == PEControl::RGBA6_Z24;
uid_data->is_depth_copy = is_depth_copy;
uid_data->is_intensity = is_intensity;
uid_data->scale_by_half = scale_by_half;
return out;
}
ShaderCode GenerateShader(APIType api_type, const UidData* uid_data)
{
const bool mono_depth = uid_data->is_depth_copy && g_ActiveConfig.bStereoEFBMonoDepth;
ShaderCode out;
if (api_type == APIType::OpenGL)
{
out.Write("SAMPLER_BINDING(9) uniform sampler2DArray samp9;\n"
"#define samp0 samp9\n"
"#define uv0 f_uv0\n"
"in vec3 uv0;\n"
"out vec4 ocol0;\n"
"void main(){\n"
" vec4 texcol = texture(samp0, %s);\n",
mono_depth ? "vec3(uv0.xy, 0.0)" : "uv0");
}
else if (api_type == APIType::Vulkan)
{
out.Write("SAMPLER_BINDING(0) uniform sampler2DArray samp0;\n"
"layout(location = 0) in vec3 uv0;\n"
"layout(location = 1) in vec4 col0;\n"
"layout(location = 0) out vec4 ocol0;"
"void main(){\n"
" vec4 texcol = texture(samp0, %s);\n",
mono_depth ? "vec3(uv0.xy, 0.0)" : "uv0");
}
else if (api_type == APIType::D3D)
{
out.Write("Texture2DArray tex0 : register(t0);\n"
"SamplerState samp0 : register(s0);\n"
"void main(out float4 ocol0 : SV_Target,\n"
" in float4 pos : SV_Position,\n"
" in float3 uv0 : TEXCOORD0) {\n"
" float4 texcol = tex0.Sample(samp0, uv0);\n");
}
if (uid_data->is_depth_copy)
{
if (api_type == APIType::D3D || api_type == APIType::Vulkan)
out.Write("texcol.x = 1.0 - texcol.x;\n");
out.Write(" int depth = int(texcol.x * 16777216.0);\n"
// Convert to Z24 format
" int4 workspace;\n"
" workspace.r = (depth >> 16) & 255;\n"
" workspace.g = (depth >> 8) & 255;\n"
" workspace.b = depth & 255;\n"
// Convert to Z4 format
" workspace.a = (depth >> 16) & 0xF0;\n"
// Normalize components to [0.0..1.0]
" texcol = float4(workspace) / 255.0;\n");
switch (uid_data->dst_format)
{
case EFBCopyFormat::R4: // Z4
out.Write(" ocol0 = texcol.aaaa;\n");
break;
case EFBCopyFormat::R8_0x1: // Z8
case EFBCopyFormat::R8: // Z8H
out.Write(" ocol0 = texcol.rrrr;\n");
break;
case EFBCopyFormat::RA8: // Z16
out.Write(" ocol0 = texcol.gggr;\n");
break;
case EFBCopyFormat::RG8: // Z16 (reverse order)
out.Write(" ocol0 = texcol.rrrg;\n");
break;
case EFBCopyFormat::RGBA8: // Z24X8
out.Write(" ocol0 = float4(texcol.rgb, 0.0);\n");
break;
case EFBCopyFormat::G8: // Z8M
out.Write(" ocol0 = texcol.gggg;\n");
break;
case EFBCopyFormat::B8: // Z8L
out.Write(" ocol0 = texcol.bbbb;\n");
break;
case EFBCopyFormat::GB8: // Z16L - copy lower 16 depth bits
// expected to be used as an IA8 texture (upper 8 bits stored as intensity, lower 8 bits
// stored as alpha)
// Used e.g. in Zelda: Skyward Sword
out.Write(" ocol0 = texcol.gggb;\n");
break;
default:
ERROR_LOG(VIDEO, "Unknown copy zbuf format: 0x%X", static_cast<int>(uid_data->dst_format));
out.Write(" ocol0 = float4(texcol.bgr, 0.0);\n");
break;
}
}
else if (uid_data->is_intensity)
{
bool has_four_bits =
(uid_data->dst_format == EFBCopyFormat::R4 || uid_data->dst_format == EFBCopyFormat::RA4);
bool has_alpha =
(uid_data->dst_format == EFBCopyFormat::RA4 || uid_data->dst_format == EFBCopyFormat::RA8);
switch (uid_data->dst_format)
{
case EFBCopyFormat::R4: // I4
case EFBCopyFormat::R8_0x1: // I8
case EFBCopyFormat::R8: // I8
case EFBCopyFormat::RA4: // IA4
case EFBCopyFormat::RA8: // IA8
if (has_four_bits)
out.Write(" texcol = float4(int4(texcol * 255.0) & 0xF0) * (1.0 / 240.0);\n");
// TODO - verify these coefficients
out.Write(" const float3 coefficients = float3(0.257, 0.504, 0.098);\n"
" float intensity = dot(texcol.rgb, coefficients) + 16.0 / 255.0;\n"
" ocol0 = float4(intensity, intensity, intensity, %s);\n",
has_alpha ? "texcol.a" : "intensity");
break;
default:
ERROR_LOG(VIDEO, "Unknown copy intensity format: 0x%X",
static_cast<int>(uid_data->dst_format));
out.Write(" ocol0 = texcol;\n");
break;
}
}
else
{
if (!uid_data->efb_has_alpha)
out.Write(" texcol.a = 1.0;\n");
switch (uid_data->dst_format)
{
case EFBCopyFormat::R4: // R4
out.Write(" float red = float(int(texcol.r * 255.0) & 0xF0) * (1.0 / 240.0);\n"
" ocol0 = float4(red, red, red, red);\n");
break;
case EFBCopyFormat::R8_0x1: // R8
case EFBCopyFormat::R8: // R8
out.Write(" ocol0 = texcol.rrrr;\n");
break;
case EFBCopyFormat::RA4: // RA4
out.Write(" float2 red_alpha = float2(int2(texcol.ra * 255.0) & 0xF0) * (1.0 / 240.0);\n"
" ocol0 = red_alpha.rrrg;\n");
break;
case EFBCopyFormat::RA8: // RA8
out.Write(" ocol0 = texcol.rrra;\n");
break;
case EFBCopyFormat::A8: // A8
out.Write(" ocol0 = texcol.aaaa;\n");
break;
case EFBCopyFormat::G8: // G8
out.Write(" ocol0 = texcol.gggg;\n");
break;
case EFBCopyFormat::B8: // B8
out.Write(" ocol0 = texcol.bbbb;\n");
break;
case EFBCopyFormat::RG8: // RG8
out.Write(" ocol0 = texcol.rrrg;\n");
break;
case EFBCopyFormat::GB8: // GB8
out.Write(" ocol0 = texcol.gggb;\n");
break;
case EFBCopyFormat::RGB565: // RGB565
out.Write(" float2 red_blue = float2(int2(texcol.rb * 255.0) & 0xF8) * (1.0 / 248.0);\n"
" float green = float(int(texcol.g * 255.0) & 0xFC) * (1.0 / 252.0);\n"
" ocol0 = float4(red_blue.r, green, red_blue.g, 1.0);\n");
break;
case EFBCopyFormat::RGB5A3: // RGB5A3
// TODO: The MSB controls whether we have RGB5 or RGB4A3, this selection
// will need to be implemented once we move away from floats.
out.Write(" float3 color = float3(int3(texcol.rgb * 255.0) & 0xF8) * (1.0 / 248.0);\n"
" float alpha = float(int(texcol.a * 255.0) & 0xE0) * (1.0 / 224.0);\n"
" ocol0 = float4(color, alpha);\n");
break;
case EFBCopyFormat::RGBA8: // RGBA8
out.Write(" ocol0 = texcol;\n");
break;
case EFBCopyFormat::XFB: // XFB copy, we just pretend it's an RGBX copy
out.Write(" ocol0 = float4(texcol.rgb, 1.0);\n");
break;
default:
ERROR_LOG(VIDEO, "Unknown copy color format: 0x%X", static_cast<int>(uid_data->dst_format));
out.Write(" ocol0 = texcol;\n");
break;
}
}
out.Write("}\n");
return out;
}
} // namespace TextureConversionShaderGen